[Milsurplus] ASR-33

[J. Forster]

> I think the Rolm 1602 used the same code as the Data General Nova series
> systems, do not know if the memory addresses the same way or not.

Sort of. The 1602, best as I can tell, is a mix of Nova and Eclipse
instruction sets. The main changes are around memory mapping to allow more
core than a Nova would support.

> Much
> that I have read about the 1602 leads me to think other than a boot
loader nothing else resided in the system and all the programming was
developed on a separate system, compiled and dumped on the 1602 by paper
tape.

One of mne has a 9 track, 1600 BPI tape drive. The Nova boot is 32 words
long and wouls boot from any device, paper tape or mag tape or hard disk.
I'm very familiar w/ Novas.

Would speculate the 1602 was used for reading and generating transponder
code for radar displays.

Don't know. The AMRAAM was a prototype, stand off, nuke missile, I think.
This stuff was from the unsuccessful bidder. There was a lot of associated
RADAR hardware, now in parts, and a spiffy TWT amp, in a tank of Freon.


I have a head for the 1602 but nothing else. There are
> lots of three or four at time of the newer 1666 that I have seen on
> Government Liquidators but the lack of pin out information, requirement
> for multipin new style connectors and questions about code and memory
> stacks have kept me away.

The connectors are Deutsch and a real bitch to work on. Been there.
Special tools. $$$$$. Luckily I got the cable all made up.

> I have been told that the control head that I
> have will fit directly on the front or back of the system but not having
> a system have no way of testing.

The panel can be attached or remoted, maybe 10' to 20'. I think attaching
it takes special hardware I don't have.

Best,
-John

============

> Ray Fantini KA3EKH
>
> -----Original Message-----
> From: J. Forster [mailto:jfor at quik.com]
> Sent: Wednesday, December 09, 2009 12:10 PM
> To: Ray Fantini
> Cc: Milsurplus; MRCA at mailman.qth.net
> Subject: Re: [Milsurplus] ASR-33
>
> I have a number of Rolm 1602 (?) systems, but not 1 square inch of paper
> on any of them. I know they were complete and working as I took them out
> of a complete AMRAAM test station.
>
> Any doc out there?
>
> -John
>
> ==============
>
>
>> I have more or less exhausted the ARC-38/618S project in as much as the
>> radios are all working with their antenna tuners and the like and have
>> been giving lots of thought to branching out into a different direction
>> for a short time. Was going to start assembling a PDP-11/05 system and
>> although I have lots of newer systems that I can set up to emulate a
>> ASR-33 having a real ASR-33 with the paper tape would be uptown, kind of
>> like running a dynamotor with the old radio. Anyone out there have an
>> ASR-33 they can be talked out of? Or any military computer that pre
>> dates
>> DOS/Windows? Have looked for a Rolm or Data General NOVA for years now
>> but
>> not a lot around so will settle on building up a PDP 11 instead, I have
>> done a couple dozen PC base military systems and now want something pre
>> PC.
>> Ray Fantini KA3EKH
>>
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